A 48-Year-Old Man Dies in a Motor Vehicle Crash

A 48-year-old man dies in a motor vehicle crash.  He had a history of intravenous drug use and had recently been released from prison.  The patient's other medical conditions included hepatitis C and hypertension.  On autopsy, he is found to have a small, fibrotic focus in the upper portion of the lower lobe of the right lung and a calcified right hilar lymph node.  These autopsy findings are most consistent with which of the following?

A) Hematogenous dissemination of Mycobacteria tuberculosis
B) Mycobacterial elimination from the body
C) Poor immunity against mycobacterial infection
D) Primary M tuberculosis infection
E) Secondary M tuberculosis disease

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